/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file           : main.c
  * @brief          : Main program body
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) 2023 STMicroelectronics.
  * All rights reserved.</center></h2>
  *
  * This software component is licensed by ST under BSD 3-Clause license,
  * the "License"; You may not use this file except in compliance with the
  * License. You may obtain a copy of the License at:
  *                        opensource.org/licenses/BSD-3-Clause
  *
  ******************************************************************************
  */
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include "fifo.h"

#define USART1_RX_BUFFER_SIZE (512)
#define USART1_TX_BUFFER_SIZE (512)
#define USART1_TX_FIFO_SIZE (2048)


#define BUFFERSIZE 255//
uint8_t ReceiveBuff[BUFFERSIZE]; 
uint8_t input_buf[BUFFERSIZE];
uint8_t Rx_len;
extern DMA_HandleTypeDef hdma_usart1_rx;

uint16_t to_send_len;
uint16_t to_tx_fifo_len;
uint16_t len;

/* USER CODE END Includes */

/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */

/* USER CODE END PTD */

/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
/* USER CODE END PD */

/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */

/* USER CODE END PM */

/* Private variables ---------------------------------------------------------*/
UART_HandleTypeDef huart1;
DMA_HandleTypeDef hdma_usart1_rx;
DMA_HandleTypeDef hdma_usart1_tx;

/* USER CODE BEGIN PV */

/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_DMA_Init(void);
static void MX_USART1_UART_Init(void);
/* USER CODE BEGIN PFP */

/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */

static uint8_t usart1_rx_buff[USART1_RX_BUFFER_SIZE];
static uint8_t usart1_tx_buff[USART1_TX_BUFFER_SIZE];
static uint8_t usart1_tx_fifo_buff[USART1_TX_FIFO_SIZE];
typedef uint32_t (*usart_call_back)(uint8_t *buf, uint16_t len);
char WriteBuffer[]= "STM32CubeMX W25QXX FATFS FREERTOS Test\r\n";
char WriteBuffer1[]= "STM32CubeMX W52QXX FATFS FREERTOS Test\r\n";

typedef struct
{
    UART_HandleTypeDef *uart_h;
    DMA_HandleTypeDef *dma_h;
    uint16_t rx_buffer_size;
    uint8_t *rx_buffer;
    uint16_t read_start_index;
    usart_call_back call_back_f;

    uint8_t *tx_buffer;
    uint16_t tx_buffer_size;
    fifo_s_t tx_fifo;
    uint8_t *tx_fifo_buffer;
    uint16_t tx_fifo_size;
    uint8_t is_sending;
} usart_manage_obj_t;

usart_manage_obj_t usart1_manage_obj = {0};

int32_t usart_transmit(usart_manage_obj_t *m_obj, uint8_t *buf, uint16_t len);

void usart1_manage_init(void)
{
    usart1_manage_obj.rx_buffer = usart1_rx_buff;
    usart1_manage_obj.rx_buffer_size = USART1_RX_BUFFER_SIZE;
    usart1_manage_obj.dma_h = &hdma_usart1_rx;
    usart1_manage_obj.uart_h = &huart1;
    usart1_manage_obj.tx_fifo_buffer = usart1_tx_fifo_buff;
    usart1_manage_obj.tx_fifo_size = USART1_TX_FIFO_SIZE;
    usart1_manage_obj.tx_buffer_size = USART1_TX_BUFFER_SIZE;
    usart1_manage_obj.tx_buffer = usart1_tx_buff;
    usart1_manage_obj.is_sending = 0;

    fifo_s_init(&(usart1_manage_obj.tx_fifo), usart1_tx_fifo_buff, USART1_TX_FIFO_SIZE);

//    HAL_UART_Receive_DMA(&huart1, usart1_rx_buff, USART1_RX_BUFFER_SIZE);
//    __HAL_UART_ENABLE_IT(&huart1, UART_IT_IDLE);
}
/* USER CODE END 0 */

/**
  * @brief  The application entry point.
  * @retval int
  */
int main(void)
{
  /* USER CODE BEGIN 1 */

  /* USER CODE END 1 */

  /* MCU Configuration--------------------------------------------------------*/

  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  HAL_Init();

  /* USER CODE BEGIN Init */

  /* USER CODE END Init */

  /* Configure the system clock */
  SystemClock_Config();

  /* USER CODE BEGIN SysInit */

  /* USER CODE END SysInit */

  /* Initialize all configured peripherals */
  MX_GPIO_Init();
  MX_DMA_Init();
  MX_USART1_UART_Init();
  /* USER CODE BEGIN 2 */
	
	usart1_manage_init();
	
	
	__HAL_UART_ENABLE_IT(&huart1, UART_IT_IDLE);//
	HAL_UART_Receive_DMA(&huart1,ReceiveBuff,BUFFERSIZE);//
  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
    /* USER CODE END WHILE */

    /* USER CODE BEGIN 3 */
		HAL_Delay(500);
		HAL_GPIO_TogglePin(Led_GPIO_Port,Led_Pin);
//		HAL_UART_Transmit_DMA(&huart1,WriteBuffer,sizeof(WriteBuffer));
//		HAL_Delay(5);
		
		len = sizeof(WriteBuffer1);
		usart_transmit(&usart1_manage_obj, WriteBuffer1, len);
//		HAL_Delay(5);
		usart_transmit(&usart1_manage_obj, WriteBuffer, len);
//		HAL_Delay(5);
		usart_transmit(&usart1_manage_obj, WriteBuffer1, len);
		
		
		/*
		len = sizeof(WriteBuffer1);
		if (len < usart1_manage_obj.tx_buffer_size)
     {
            to_send_len = len;
            to_tx_fifo_len = 0;
		}
		else if (len < usart1_manage_obj.tx_buffer_size + usart1_manage_obj.tx_fifo_size)
		{
				to_send_len = usart1_manage_obj.tx_buffer_size;
				to_tx_fifo_len = len - usart1_manage_obj.tx_buffer_size;
		}
		else
		{
				to_send_len = usart1_manage_obj.tx_buffer_size;
				to_tx_fifo_len = usart1_manage_obj.tx_fifo_size;
		}
		
		
		if (to_send_len > 0)
    {
        memcpy(usart1_manage_obj.tx_buffer, WriteBuffer1, to_send_len);
        usart1_manage_obj.is_sending = 1;
        HAL_UART_Transmit_DMA(usart1_manage_obj.uart_h, usart1_manage_obj.tx_buffer, to_send_len);
    }
    if (to_tx_fifo_len > 0)
    {
        uint8_t len;
        len = fifo_s_puts(&(usart1_manage_obj.tx_fifo), (char *)(WriteBuffer1) + to_send_len, to_tx_fifo_len);

//        if (len != to_tx_fifo_len)
//        {
//            return -1;
//        }
    }
		
		*/
//		fifo_s_puts(&usart1_manage_obj.tx_fifo, &WriteBuffer1[0], sizeof(WriteBuffer1));	//数据填入 FIFO
//		fifo_s_puts(&usart1_manage_obj.tx_fifo, &WriteBuffer1[0], sizeof(WriteBuffer1));	//数据填入 FIFO
//		uint8_t len = fifo_s_used(&usart1_manage_obj.tx_fifo);
//		fifo_s_gets(&usart1_manage_obj.tx_fifo, (char *)input_buf, len);
//		HAL_UART_Transmit_DMA(&huart1,input_buf,len);
//		HAL_Delay(5);
		
		
//		fifo_s_puts(m_obj->tx_fifo, (char *)(buf) + to_send_len, to_tx_fifo_len);
//		uint8_t len = fifo_s_used(&uart_tx_fifo);		//待发送数据长度
//		fifo_s_gets(&uart_tx_fifo, (char *)buf, len);	//从 FIFO 取数据
//		
		
  }
  /* USER CODE END 3 */
}

/**
  * @brief System Clock Configuration
  * @retval None
  */
void SystemClock_Config(void)
{
  RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};

  /** Configure the main internal regulator output voltage
  */
  __HAL_RCC_PWR_CLK_ENABLE();
  __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
  /** Initializes the RCC Oscillators according to the specified parameters
  * in the RCC_OscInitTypeDef structure.
  */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
  RCC_OscInitStruct.HSEState = RCC_HSE_ON;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
  RCC_OscInitStruct.PLL.PLLM = 4;
  RCC_OscInitStruct.PLL.PLLN = 168;
  RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
  RCC_OscInitStruct.PLL.PLLQ = 4;
  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  {
    Error_Handler();
  }
  /** Initializes the CPU, AHB and APB buses clocks
  */
  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                              |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;

  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5) != HAL_OK)
  {
    Error_Handler();
  }
}

/**
  * @brief USART1 Initialization Function
  * @param None
  * @retval None
  */
static void MX_USART1_UART_Init(void)
{

  /* USER CODE BEGIN USART1_Init 0 */

  /* USER CODE END USART1_Init 0 */

  /* USER CODE BEGIN USART1_Init 1 */

  /* USER CODE END USART1_Init 1 */
  huart1.Instance = USART1;
  huart1.Init.BaudRate = 115200;
  huart1.Init.WordLength = UART_WORDLENGTH_8B;
  huart1.Init.StopBits = UART_STOPBITS_1;
  huart1.Init.Parity = UART_PARITY_NONE;
  huart1.Init.Mode = UART_MODE_TX_RX;
  huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;
  huart1.Init.OverSampling = UART_OVERSAMPLING_16;
  if (HAL_UART_Init(&huart1) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN USART1_Init 2 */

  /* USER CODE END USART1_Init 2 */

}

/**
  * Enable DMA controller clock
  */
static void MX_DMA_Init(void)
{

  /* DMA controller clock enable */
  __HAL_RCC_DMA2_CLK_ENABLE();

  /* DMA interrupt init */
  /* DMA2_Stream2_IRQn interrupt configuration */
  HAL_NVIC_SetPriority(DMA2_Stream2_IRQn, 6, 0);
  HAL_NVIC_EnableIRQ(DMA2_Stream2_IRQn);
  /* DMA2_Stream7_IRQn interrupt configuration */
  HAL_NVIC_SetPriority(DMA2_Stream7_IRQn, 7, 0);
  HAL_NVIC_EnableIRQ(DMA2_Stream7_IRQn);

}

/**
  * @brief GPIO Initialization Function
  * @param None
  * @retval None
  */
static void MX_GPIO_Init(void)
{
  GPIO_InitTypeDef GPIO_InitStruct = {0};

  /* GPIO Ports Clock Enable */
  __HAL_RCC_GPIOH_CLK_ENABLE();
  __HAL_RCC_GPIOA_CLK_ENABLE();

  /*Configure GPIO pin Output Level */
  HAL_GPIO_WritePin(Led_GPIO_Port, Led_Pin, GPIO_PIN_SET);

  /*Configure GPIO pin : Led_Pin */
  GPIO_InitStruct.Pin = Led_Pin;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
  HAL_GPIO_Init(Led_GPIO_Port, &GPIO_InitStruct);

}

/* USER CODE BEGIN 4 */
int32_t usart_transmit(usart_manage_obj_t *m_obj, uint8_t *buf, uint16_t len)
{
    uint16_t to_send_len;
    uint16_t to_tx_fifo_len;

    if (m_obj->is_sending == 0)
    {
        if (len < m_obj->tx_buffer_size)
        {
            to_send_len = len;
            to_tx_fifo_len = 0;
        }
        else if (len < m_obj->tx_buffer_size + m_obj->tx_fifo_size)
        {
            to_send_len = m_obj->tx_buffer_size;
            to_tx_fifo_len = len - m_obj->tx_buffer_size;
        }
        else
        {
            to_send_len = m_obj->tx_buffer_size;
            to_tx_fifo_len = m_obj->tx_fifo_size;
        }
    }
    else
    {
        if (len < m_obj->tx_fifo_size)
        {
            to_send_len = 0;
            to_tx_fifo_len = len;
        }
        else
        {
            to_send_len = 0;
            to_tx_fifo_len = m_obj->tx_fifo_size;
        }
    }

    if (to_send_len > 0)
    {
        memcpy(m_obj->tx_buffer, buf, to_send_len);
        m_obj->is_sending = 1;
        HAL_UART_Transmit_DMA(m_obj->uart_h, m_obj->tx_buffer, to_send_len);
    }
    if (to_tx_fifo_len > 0)
    {
        uint8_t len;
        len = fifo_s_puts(&(m_obj->tx_fifo), (char *)(buf) + to_send_len, to_tx_fifo_len);

//        if (len != to_tx_fifo_len)
//        {
//            return -1;
//        }
    }

    return 0;
}


static void usart_transmit_hook(usart_manage_obj_t *m_obj)
{
    uint16_t fifo_data_num = 0;
    uint16_t send_num = 0;

    fifo_data_num = m_obj->tx_fifo.used_num;

    if (fifo_data_num != 0)
    {
        if (fifo_data_num < m_obj->tx_buffer_size)
        {
            send_num = fifo_data_num;
        }
        else
        {
            send_num = m_obj->tx_buffer_size;
        }
        fifo_s_gets(&(m_obj->tx_fifo), (char *)(m_obj->tx_buffer), send_num);
        m_obj->is_sending = 1;
        HAL_UART_Transmit_DMA(m_obj->uart_h, m_obj->tx_buffer, send_num);
    }
    else
    {
        m_obj->is_sending = 0;
    }
    return;
}

void HAL_UART_TxCpltCallback(UART_HandleTypeDef *huart)
{
    if (huart == &huart1)
    {
        usart_transmit_hook(&usart1_manage_obj);
    }
    return;
}
/* USER CODE END 4 */

/**
  * @brief  This function is executed in case of error occurrence.
  * @retval None
  */
void Error_Handler(void)
{
  /* USER CODE BEGIN Error_Handler_Debug */
  /* User can add his own implementation to report the HAL error return state */
  __disable_irq();
  while (1)
  {
  }
  /* USER CODE END Error_Handler_Debug */
}

#ifdef  USE_FULL_ASSERT
/**
  * @brief  Reports the name of the source file and the source line number
  *         where the assert_param error has occurred.
  * @param  file: pointer to the source file name
  * @param  line: assert_param error line source number
  * @retval None
  */
void assert_failed(uint8_t *file, uint32_t line)
{
  /* USER CODE BEGIN 6 */
  /* User can add his own implementation to report the file name and line number,
     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
  /* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
